Home / 25,645.16-38,470.20-8,115.20

Finding the Fourth Proportional to 25,645.16, 38,470.20 and 8,115.20

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Solution

The fourth proportional to 25,645.16, 38,470.20 and 8,115.20 is: 12,173.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,645.16 : 38,470.20 = 8,115.20 : x
  2. Step 2: Convert to fraction form
    25,645.16/38,470.20 = 8,115.20/x
  3. Step 3: Cross multiply
    25,645.16x = 38,470.20 × 8,115.20
  4. Step 4: Simplify right side
    25,645.16x = 312,193,367.04
  5. Step 5: Solve for x
    x = 312,193,367.04/25,645.16
  6. Step 6: Final answer
    x = 12,173.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.